1 /* KeyBoardLEDs.c provide access to the keyboard LEDs.
3 Copyright (C) 2005-2022 Free Software Foundation, Inc.
4 Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
6 This file is part of GNU Modula-2.
8 GNU Modula-2 is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 GNU Modula-2 is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 Under Section 7 of GPL version 3, you are granted additional
19 permissions described in the GCC Runtime Library Exception, version
20 3.1, as published by the Free Software Foundation.
22 You should have received a copy of the GNU General Public License and
23 a copy of the GCC Runtime Library Exception along with this program;
24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
25 <http://www.gnu.org/licenses/>. */
30 #define EXPORT(FUNC) m2cor ## _KeyBoardLEDs_ ## FUNC
31 #define M2EXPORT(FUNC) m2cor ## _M2_KeyBoardLEDs_ ## FUNC
32 #define M2LIBNAME "m2cor"
36 #include <sys/types.h>
40 #include <sys/ioctl.h>
46 static bool initialized
= false;
50 initialize_module (void)
55 fd
= open ("/dev/tty", O_RDONLY
);
58 perror ("unable to open /dev/tty");
65 EXPORT(SwitchScroll
) (int scrolllock
)
70 int r
= ioctl (fd
, KDGETLED
, &leds
);
72 leds
= leds
| LED_SCR
;
74 leds
= leds
& (~ LED_SCR
);
75 r
= ioctl (fd
, KDSETLED
, leds
);
79 EXPORT(SwitchNum
) (int numlock
)
84 int r
= ioctl (fd
, KDGETLED
, &leds
);
86 leds
= leds
| LED_NUM
;
88 leds
= leds
& (~ LED_NUM
);
89 r
= ioctl (fd
, KDSETLED
, leds
);
93 EXPORT(SwitchCaps
) (int capslock
)
98 int r
= ioctl (fd
, KDGETLED
, &leds
);
100 leds
= leds
| LED_CAP
;
102 leds
= leds
& (~ LED_CAP
);
103 r
= ioctl (fd
, KDSETLED
, leds
);
107 EXPORT(SwitchLeds
) (int numlock
, int capslock
, int scrolllock
)
109 EXPORT(SwitchScroll
) (scrolllock
);
110 EXPORT(SwitchNum
) (numlock
);
111 EXPORT(SwitchCaps
) (capslock
);
115 M2EXPORT(init
) (int, char **, char **)
121 EXPORT(SwitchLeds
) (int numlock
, int capslock
, int scrolllock
)
126 EXPORT(SwitchScroll
) (int scrolllock
)
131 EXPORT(SwitchNum
) (int numlock
)
136 EXPORT(SwitchCaps
) (int capslock
)
141 M2EXPORT(init
) (int, char **, char **)
146 /* GNU Modula-2 linking hooks. */
149 M2EXPORT(fini
) (int, char **, char **)
158 extern "C" void __attribute__((__constructor__
))
159 M2EXPORT(ctor
) (void)
161 m2pim_M2RTS_RegisterModule ("KeyBoardLEDs", M2LIBNAME
,
162 M2EXPORT(init
), M2EXPORT(fini
),